If ovs port is virtual, we use OVSIntPort to create it.
Otherwise it should be OVSPort.
I've added new key: ovs_port_type to not intersect with current
deployments and not hurt anyone.
I've updated doc to have an example of ovs peering patch.
Customer-Found
Change-Id: Ieddb5fcc02d410c3cc14c89737992690cb5f3975